package com.api.gbhg.liuwenbo.test;

import java.math.BigDecimal;
import java.util.HashMap;
import java.util.Map;

public class a {
    public static void main(String[] args) {
        Map<String,Object> map= new HashMap<>();
        map.put("a","231");
        map.put("b","231");
        aa(map);
        System.out.println(map.size());
    }

    public static Boolean aa(Map<String,Object> param){
        param.remove("a");
        return false;
    }
}
